LICHENES ANTARCTICI. 645 
Patches several inches wide, very uneven with elevated 
rounded foldings and depressions. In aged specimens the 
thallus is wrinkled towards the centre, from the confluence 
of the buds. Apothecia always concave and cup-shaped. 
The stipitate buds and the wider and more elongated divi- 
sions of the thallus distinguish this species from P. con- 
spersa, Ach. 
71. P. Zenuirima, n. sp.; thallo glauco-cinereo madore vires- 
centi sinuato-lobato subtus atro-fibrilloso, lobis angulato- 
rotundatis concaviusculis, gemmis minutis sparsis linea- 
ribus pulverem album effundentibus, apotheciis subpedi- 
cellatis demum planis disco rufo-castaneo margine tenui 
incurvo extus gemmiferis. 
Has. Van Diemen's Land. 
Thallus several inches wide; often reddish-brown towards 
the centre, uneven, rough beneath with dense, short, black 
fibres. Aged apothecia sometimes 1 inch wide. Differs 
from P. sulcata, Tayl. by the wider, smoother, and less in- 
cised lobes, the more scattered and more minute buds and 
the browner colour of the aged thallus. 
72. P. rutidota, n. sp. thallo flavicante orbiculari levi centro 
corrugato inciso-lobato lobis rotundatis crenatis subtus 
atris corrugatis, gemmis marginalibus plano-granulatis 
Statim in thallum expandentibus, apotheciis centralibus 
confertis concavis disco rufescenti margine tenui demum 
crenulato, 
Has. Van Diemen's Land. 
Thallus 3-4 inches wide, closely adhering to the bark of 
trees; uneven with longitudinal folds ; the central portion is 
Closely and minutely wrinkled, and is tawny. The thallus 
of P. caperata, Ach. is far larger, and of a lighter yellow, 
while the buds are in cup-shaped eruptions of the thallus. 
73. P. splachnirima, n. sp3 thallo utrinque albido glabro 
sinuato-lobato, lobis rotundatis crenatis marginibus adscen- 
dentibus, gemmis marginalibus plano-granulatis statim 
in thallum expandentibus, apotheciis centralibus plani- 
usculis disco carneo albo-pruinoso margine tenui undulato. 
